/* Set the defaults for DataTables initialisation */
$.extend(true, $.fn.dataTable.defaults, {
  sDom: "<'row-fluid'<'span6'l><'span6'f>r>t<'row-fluid'<'span6'i><'span6'p>>",
  sPaginationType: 'bootstrap',
  oLanguage: {
    sLengthMenu: '_MENU_ records per page'
  }
})

/* Default class modification */
$.extend($.fn.dataTableExt.oStdClasses, {
  sWrapper: 'dataTables_wrapper form-inline'
})

/* API method to get paging information */
$.fn.dataTableExt.oApi.fnPagingInfo = function (oSettings) {
  return {
    iStart: oSettings._iDisplayStart,
    iEnd: oSettings.fnDisplayEnd(),
    iLength: oSettings._iDisplayLength,
    iTotal: oSettings.fnRecordsTotal(),
    iFilteredTotal: oSettings.fnRecordsDisplay(),
    iPage: Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength),
    iTotalPages: Math.ceil(oSettings.fnRecordsDisplay() / oSettings._iDisplayLength)
  }
}

/* Bootstrap style pagination control */
$.extend($.fn.dataTableExt.oPagination, {
  bootstrap: {
    fnInit: function (oSettings, nPaging, fnDraw) {
      var oLang = oSettings.oLanguage.oPaginate
      var fnClickHandler = function (e) {
        e.preventDefault()
        if (oSettings.oApi._fnPageChange(oSettings, e.data.action)) {
          fnDraw(oSettings)
        }
      }

      $(nPaging).addClass('pagination').append(
        '<ul>' +
					'<li class="prev disabled"><a href="#">&larr; ' + oLang.sPrevious + '</a></li>' +
					'<li class="next disabled"><a href="#">' + oLang.sNext + ' &rarr; </a></li>' +
				'</ul>'
      )
      var els = $('a', nPaging)
      $(els[0]).bind('click.DT', { action: 'previous' }, fnClickHandler)
      $(els[1]).bind('click.DT', { action: 'next' }, fnClickHandler)
    },

    fnUpdate: function (oSettings, fnDraw) {
      var iListLength = 5
      var oPaging = oSettings.oInstance.fnPagingInfo()
      var an = oSettings.aanFeatures.p
      var i; var j; var sClass; var iStart; var iEnd; var iHalf = Math.floor(iListLength / 2)

      if (oPaging.iTotalPages < iListLength) {
        iStart = 1
        iEnd = oPaging.iTotalPages
      } else if (oPaging.iPage <= iHalf) {
        iStart = 1
        iEnd = iListLength
      } else if (oPaging.iPage >= (oPaging.iTotalPages - iHalf)) {
        iStart = oPaging.iTotalPages - iListLength + 1
        iEnd = oPaging.iTotalPages
      } else {
        iStart = oPaging.iPage - iHalf + 1
        iEnd = iStart + iListLength - 1
      }

      for (i = 0, iLen = an.length; i < iLen; i++) {
        // Remove the middle elements
        $('li:gt(0)', an[i]).filter(':not(:last)').remove()

        // Add the new list items and their event handlers
        for (j = iStart; j <= iEnd; j++) {
          sClass = (j == oPaging.iPage + 1) ? 'class="active"' : ''
          $('<li ' + sClass + '><a href="#">' + j + '</a></li>')
            .insertBefore($('li:last', an[i])[0])
            .bind('click', function (e) {
              e.preventDefault()
              oSettings._iDisplayStart = (parseInt($('a', this).text(), 10) - 1) * oPaging.iLength
              fnDraw(oSettings)
            })
        }

        // Add / remove disabled classes from the static elements
        if (oPaging.iPage === 0) {
          $('li:first', an[i]).addClass('disabled')
        } else {
          $('li:first', an[i]).removeClass('disabled')
        }

        if (oPaging.iPage === oPaging.iTotalPages - 1 || oPaging.iTotalPages === 0) {
          $('li:last', an[i]).addClass('disabled')
        } else {
          $('li:last', an[i]).removeClass('disabled')
        }
      }
    }
  }
})

/*
 * TableTools Bootstrap compatibility
 * Required TableTools 2.1+
 */
if ($.fn.DataTable.TableTools) {
  // Set the classes that TableTools uses to something suitable for Bootstrap
  $.extend(true, $.fn.DataTable.TableTools.classes, {
    container: 'DTTT btn-group',
    buttons: {
      normal: 'btn',
      disabled: 'disabled'
    },
    collection: {
      container: 'DTTT_dropdown dropdown-menu',
      buttons: {
        normal: '',
        disabled: 'disabled'
      }
    },
    print: {
      info: 'DTTT_print_info modal'
    },
    select: {
      row: 'active'
    }
  })

  // Have the collection use a bootstrap compatible dropdown
  $.extend(true, $.fn.DataTable.TableTools.DEFAULTS.oTags, {
    collection: {
      container: 'ul',
      button: 'li',
      liner: 'a'
    }
  })
}
